I had weird midi problems with the Hapax and the 2400 where it would cut off the last bar. I sold the Hapax since that time so I cannot verify that it is still having an issue. Also, I was never sure if it was a problem with the 2400 or the Hapax (although I never had the issue with any other gear than the 2400).
Here is the thread on that issue: Live Looper cutting off last bar in new firmware [FIXED] - #30 by dnaflr